M5stack Cardputer v1.1 Development Kit

| Comparison Item |
Cardputer v1.1 |
Cardputer |
| Core Module | StampS3A | StampS3 |
| RGB LED Control Logic | RGB LED and screen backlight share the same power supply, with optimized control logic |
Powered immediately upon power supply |
| Antenna Design | Optimized antenna design for improved signal reception | Conventional antenna design |
| Key Specifications | Optimized key feel with keys sized at 4.0 x 3.0 x 2.0mm | Key size of 2.6 x 1.6 x 0.55mm |
| Power Consumption | Optimized for lower power consumption | Conventional design |
Note: New and old versions are shipped randomly

Cardputer v1.1 is a high-performance card computer designed for engineers, comprehensively upgraded from the original Cardputer. The new version features an all-new StampS3A microcontroller and optimized core module antenna and keys, significantly enhancing system stability and user experience.
In terms of control and interaction, the product is equipped with a 56-key keyboard and a 1.14-inch TFT screen for efficient display and operation; the onboard SPM1423 digital MEMS microphone supports recording and wake-up functions and outputs audio via an integrated cavity speaker; additionally, an infrared emitter provides external infrared control capabilities.
For expanded functionality, a built-in Grove interface facilitates custom sensor expansion; storage is enhanced with a Micro SD card slot for easy expansion of storage space. The power system employs an internal 120mAh battery alongside a 1400mAh battery in the base, integrating lithium battery charging and boost/buck circuits to greatly extend battery life. Structurally, the base is equipped with magnets for metal adhesion and is compatible with LEGO stud expansion.
This product is widely applicable for rapid functional verification, industrial control, home control systems, and various other application scenarios.

Product Features
StampS3A microcontroller
56-key keyboard
1.14-inch TFT screen
Cavity speaker and SPM1423 digital MEMS microphone
Infrared emitter for infrared control interaction
HY2.0-4P interface
Micro SD card slot
Built-in 120mAh and base 1400mAh lithium batteries
Base with magnets
Compatible with LEGO stud expansion
Development Platforms
Arduino
UIFlow 2.0
ESP-IDF
Applications
Fast functional verification and prototyping
Industrial control and automation
Home Control System
Data acquisition and sensor monitoring
Embedded system development and learning
Wireless communication and Internet of Things (IoT) projects



Package Includes
1 x Cardputer V1.1
1 x L-shaped 1.5mm hex key (for M2 screws)















Download Mode
If you want to enter download mode, press and hold the G0 button on StampS3 before turning it on, then release it after powering it on.
Charging Notice
When charging the Cardputer v1.1, please switch the power button to “ON”.
Dismantling Precautions
When removing the StampS3A from the panel, be careful with the FPC cable and connector on the back-gently pull them out to avoid damaging the screen connector socket. Please refer to the operation video in the Cardputer Accessory Kit for guidance.

Grove Interface

SPM1423 MIC

Micro SD Socket

ST7789V2 & RGB LED

Keyboard & Battery Detect

Speaker & IR


